The authorities said Mount Agung has seen signs of magma rising in the recent days, forcing to create a 7.5 mile buffer zone around the mountain where the volcano is located.

The highest level alert was issued on Friday.

Popular tourist areas and flights in Bali remain unaffected, despite Indonesia’s national volcanology center saying on Sunday night that the mountain’s “seismic energy is increasing and has the potential to erupt,” the BBC reported.